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3 votes

Covariance matrix not calculated when fitting gaussians?

You must explicitly request uncertainties. fitter = fitting.LevMarLSQfitter(calc_uncertainties=True) Read the docs: https://docs.astropy.org/en/stable/api/astropy....
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1 vote

python skyfield hipparcos sun mean longitude (L)

Thank you so much. Your comments made me look further, I found my answer in the code below. # # It was the mean_longitude (L) of of the sun I was after. ...
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